A refrigeration device includes a high-voltage electrical parts group having reactors and cooled elements, a low-voltage electrical parts group, a printed wiring board with the electrical parts groups mounted, and a refrigerant jacket that uses refrigerant flowing through the refrigerant circuit to cool the cooled elements. The high-voltage electrical parts group form an interleaved power supply circuit. The cooled elements are placed in an order conforming to a power supply path of the power supply circuit. The power supply circuit has a rectifier circuit, a power factor improvement circuit, smoothing capacitors, and an inverter circuit. The power factor improvement circuit has the reactors connected to each other in parallel and diodes and switching elements serving as the cooled elements connected to each of the reactors. The reactors are placed on an opposite side of the smoothing capacitors, with the diodes and the switching elements sandwiched in between.
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1. A refrigeration device having a refrigerant circuit, the refrigeration device comprising: a high-voltage electrical parts group including a plurality of reactors and cooled elements; a low-voltage electrical parts group; a printed wiring board; and a refrigerant jacket that uses refrigerant flowing through the refrigerant circuit to cool the cooled elements, the high-voltage electrical parts group including the reactors and the low-voltage electrical parts group are mounted on one main surface of the printed wiring board, the high-voltage electrical parts group forming an interleaved power supply circuit, the cooled elements of the power supply circuit being placed in an order conforming to a power supply path of the power supply circuit, the power supply circuit having a rectifier circuit, a power factor improvement circuit, smoothing capacitors, and an inverter circuit, the power factor improvement circuit having the plurality of reactors connected to each other in parallel and diodes and switching elements serving as the cooled elements connect to each of the reactors, and the reactors being placed on an opposite side of the smoothing capacitors, with the diodes and the switching elements forming the power factor improvement circuit being sandwiched in between.
This refrigeration device has a refrigerant circuit for cooling. It uses a printed wiring board with both high-voltage and low-voltage electrical components mounted on one side. The high-voltage components include reactors and elements that need cooling. A refrigerant jacket cools these elements using refrigerant. The high-voltage components form an interleaved power supply circuit. The cooled elements are arranged along the power path of the circuit. This power supply circuit includes a rectifier, a power factor correction (PFC) circuit, smoothing capacitors, and an inverter. The PFC circuit has multiple reactors connected in parallel, with diodes and switching elements (which are the cooled elements) connected to each reactor. The reactors are positioned on the opposite side of the smoothing capacitors, with the diodes and switching elements of the PFC circuit in between them.
2. The refrigeration device according to claim 1 , wherein the reactors are placed adjacent to the diodes and the switching elements forming the power factor improvement circuit.
This refrigeration device builds upon the previous description and focuses on the placement of the reactors in the power factor correction (PFC) circuit. As before, the refrigeration device has a refrigerant circuit for cooling, and high-voltage and low-voltage electrical components mounted on a printed wiring board. The high-voltage components form an interleaved power supply circuit including a rectifier, power factor correction (PFC) circuit, smoothing capacitors and an inverter, where the PFC circuit has multiple parallel reactors connected to diodes and switching elements. Here, specifically, the reactors are positioned immediately next to (adjacent to) the diodes and switching elements that make up the power factor correction (PFC) circuit.
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December 16, 2014
June 27, 2017
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